I need help in the below problem.

Thanks

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- Jul 8th 2012, 05:47 PMkingmanAlong the straight road
I need help in the below problem.

Thanks - Jul 8th 2012, 10:52 PMearbothRe: Along the straight road
1. Let r denote the distance XA and s the distance BY. Use the definition of speed: $\displaystyle speed = \frac{distance}{time}~\implies~ time = \frac{distance}{speed}$

2. You can extract a system of simultaneous equations from the text:

$\displaystyle \frac r4 = \frac{s+120}6~\wedge~\frac{r+120}6=\frac s4$

Solve for r and s. - Jul 9th 2012, 07:54 AMkingmanRe: Along the straight road
Cannot read your answer . Sorry

- Jul 9th 2012, 07:56 AMkingmanRe: Along the straight road
what is the significance of 120m